在單縫夫瑯禾費衍射中，對應于觀察屏上P點，單縫波面可分為2個半波帶，則P點處應為()
B
暫無解析
Rulesandregulations
Annualleave
Somecustomersrequestedusto_____ourpricebecausetheyconsideredittoohigh.
Isthere______________totellus?No,nothing.
Turnoverrate
